Some ways to "pull out" strings from files
Archive of posts tagged grep
“Zero or more”
This usually comes up in a form similar to "I'm running this code: $ echo "foobar 123" | sed 's/[0-9]*/blah/' blahfoobar 123 but I don't get the expected result!" (which they think should be "foobar blah"). The result they get is instead as shown above. Why is that? Remember that the star quantifier "*" means […]
Run a command on all files in a hierarchy
Something that everybody needs to do sooner or later.
Find files containing specific words
Print the names of the files that contain some set of words
